42080072 has 8 divisors (see below), whose sum is σ = 78900150. Its totient is φ = 21040032.

The previous prime is 42080069. The next prime is 42080089. The reversal of 42080072 is 27008024.

It can be written as a sum of positive squares in only one way, i.e., 40883236 + 1196836 = 6394^2 + 1094^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2629997 + ... + 2630012.

Almost surely, 2^42080072 is an apocalyptic number.

It is an amenable number.

42080072 is a deficient number, since it is larger than the sum of its proper divisors (36820078).

42080072 is a wasteful number, since it uses less digits than its factorization.

42080072 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5260015 (or 5260011 counting only the distinct ones).

The product of its (nonzero) digits is 896, while the sum is 23.

The square root of 42080072 is about 6486.9154457261. The cubic root of 42080072 is about 347.8234229923.

Adding to 42080072 its reverse (27008024), we get a palindrome (69088096).

The spelling of 42080072 in words is "forty-two million, eighty thousand, seventy-two".